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With the need of localization based services increasing, many algorithms are proposed using distance between two points and path loss exponent of the environment. In this paper, we propose an algorithm using received signal strength, Doppler Effect and frequency diversity in vehicular networks. The algorithm can estimate the path loss exponent and distance dynamically in mobile communication environment...
Under the background of networking, enterprises obtain such alliance resources as technology and knowledge in technical standard alliance and gain constant competitive advantages by means of “embedding”. Partner selection has become a significant factor and key step in the successful operation of technical standard alliance. However, there will be, due to “paradox” in relational embedding, certain...
In the wireless sensor network (WSN), the operation reliability is usually evaluated by processing measured datas at network nodes. As the traditional algorithms exist the problems of the complex calculation and large energy consumption, a method for fault diagnosis of nodes in WSN based on rough set theory (RS) and support vector machine (SVM) is proposed in this paper. In this paper, we collect...
The enterprise competitiveness is one of the core issues in the development of the national and regional economy, and its centre is the independent innovation of enterprises. At present, the enterprises in Zhejiang province are faced with external environment which is extremely complex and turbulent. The traditional resource-based views and the core competence analysis are no longer applicable to...
The satellite orbit parameters in the ephemeris and location of land emitter are studied. Universal mathematic models of TDOA and FDOA are deduced using geometric vector. The priori information of TDOA and FDOA between two satellites are analyzed which are selected from Globalstar and Inmarsat satellite communications systems. The simulation results show the effectiveness and universality of the models,...
A three-terminal DC transmission system based on modular multilevel converter (MMC) is developed to solve the problem of power supply for distributed islands or cities. The system, with flexible features, may generate high quality output voltage and reduce construction costs and power losses in the converter stations. However, the three-terminal DC system based on MMC faces more complex situations...
The compositing of two or more objects into a single image is a common form of manipulation. We describe how such composites can be detected by estimating a camera's intrinsic parameters from the image of target objects. Differences in these parameters across the image are used as evidence of tampering.
Super-resolution (SR) image reconstruction is a rapidly developing area in image processing. Especially, blind SR can generate high space resolution image without requiring priori information of the point spread function (PSF). In this paper, we propose a self-adaptive blind super-resolution image reconstruction approach which is based on multiple images. Our method can adaptively choose the parameter...
Wireless Sensor Networks (WSNs) which consist of thousands of sensor nodes has become one of the most popular topics. As the deployment of outdoor wireless sensor networks continues to accelerate, it has been clear that a proper deployment may achieve both the sound networks performance and the low cost. A basic criterion for selecting nodes location is the path loss which has essential impact on...
In the future solar energy will be very important energy source. It is noticeable that the output characteristics of a PV array are influenced by the environment factors, and the conversion efficiency of PV arrays is very low. Therefore a maximum power point tracking (MPPT) technique is needed to draw peak power from the solar array in order to maximize the produced energy. This paper introduces a...
With the increase of voltage level of transmission line, the proportion of outages because of shielding failure increases. In this paper, a numeral analysis method based on leader progression model was proposed to analyze the lightning shielding performances.
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